M 7.7 in New Caledonia on 19 May 2023 02:57 UTC

2023-05-19 04:03 message from NTWC

Key information extracted from original GTS message :

  • An earthquake with a preliminary magnitude of 7.7 occurred southeast of the loyalty ISLANDS at 0257 UTC on friday MAY 19 2023
  • TSUNAMI waves have been observed
  • Based on all available data hazardous TSUNAMI waves are forecast for some coasts
Tsunami Observations

  • The following are tsunami wave observations from coastal and/or deep-ocean sea level gauges at the indicated locations the maximum tsunami height is measured with respect to the normal tide level
Lifou New Caledoni-20.9167.303: 400.0510
Mare New Caledonia-21.5167.903: 420.0812